Improved radiological photography method - involves use of camera with wide aperture lens to take reduced scale photographs of screen

摘要

Radiological photography method gives increased speed of photography, using a camer having a large objective lens (1) opening and a press which pushes the film (6) against a field of view frame (3). The press (4) has a perfectly smooth and reflecting front face (7) and the photographics film (6) has an emulsion which is transparent at the moment of film exposure. This emulsion is very thin. The film has a sensitive emulsion on the rear face in contact with the reflecting press, and also carries a sensitive emulsion on its front face. The camera is aimed at a fluorescent screen giving a visual display of the X-ray picture.